Asia
For the entire Asia we use the up to date OSM (OpenStreetMap) datasets. In this case OSM is very good for Japan, Taiwan, Hong Kong and South Korea. China, India and most of the rest are well covered only near large cities so you might experience a lack of detail in remote areas. OSM integrated most of the free topo maps from various country organizations:
- Road Network
- Hydrography (lakes, rivers and water points like springs, fords, dams, etc.)
- Wooded areas
- Hiking Trails network
- Biking Trails network
- Elevation contours 30ft (10mt) step
- Mountain peaks
- etc...